Method and device in wireless transmission

ABSTRACT

The present disclosure provides a method and a device in wireless transmission. A User Equipment (UE) first receives a first signaling, and then receives a first radio signal, the first radio signal carrying a first bit block. The first signaling is used for determining a transmission format corresponding to the first radio signal. The transmission format corresponding to the first radio signal is one transmission format in a first format set, and the first format set comprises a first transmission format and a second transmission format. A radio signal corresponding to the first transmission format includes P radio sub-signal(s), each one of the P radio sub-signal(s) carries the first bit block, and the P radio sub-signal(s) is(are) transmitted by a same antenna port group.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation-in-part of International ApplicationNo. PCT/CN2017/092479, filed Jul. 11, 2017, claiming the prioritybenefit of Chinese Patent Application Serial Number 201610590751.2,filed on Jul. 25, 2016, the full disclosure of which is incorporatedherein by reference.

BACKGROUND Technical Field

The present disclosure relates to methods and devices for multi-antennatransmission in the technical field of mobile communications, and inparticular to a wireless communication scheme in scenarios that a basestation side is deployed with a large number of antennas.

Related Art

Massive Multi-Input Multi-Output (MIMO) becomes one research hotspot ofnext-generation mobile communications. In the massive MIMO, multipleantennas experience beamforming to form a relatively narrow beam whichpoints to a particular direction to improve the quality ofcommunication. Generally, the beam formed by multiple antennas throughbeamforming is relatively narrow, and both sides of communication needto acquire partial channel information of each other in order to makethe formed beam point to a correct direction. Before the both sides ofcommunication acquire partial channel information of each other, or inthe case that the partial channel information acquired previously hasfailed, reliable wireless transmission becomes a problem.

In view of the above problems, the present disclosure provides asolution. It should be noted that embodiments in the UE of the presentdisclosure and the characteristics in the embodiments may be applied tothe base station if no conflict is incurred, and vice versa. Further,the embodiments of the present disclosure and the characteristics in theembodiments may be mutually combined if no conflict is incurred.

SUMMARY

The inventor finds through researches that when a base station does notacquire Channel Status Information (CSI) of a downlink channel targetinga User Equipment (UE), or the previously acquired downlink channel CSIhas failed, the base station needs to ensure a correct reception oftransmitted signals using greater redundancy, for example, a beamsweeping scheme, that is, the base station transmits the same signalmultiple times through a Timing Division Multiplexing (TDM) mode, andeach time of transmission is specific to a beam in a differentdirection. When a base station acquires a (partial) CSI of a downlinkchannel targeting a certain UE, the base station may employ abeamforming approach to reduce redundancy, improve transmissionefficiency, and meanwhile guarantee the quality of reception oftransmitted signals.

According to the above analysis, the present disclosure provides amethod in a UE in wireless transmission, wherein the method includes:

receiving a first signaling; and

receiving a first radio signal, the first radio signal carrying a firstbit block.

Herein, the first signaling is a physical layer signaling, the firstsignaling is used for determining a transmission format corresponding tothe first radio signal, and the first bit block includes a positiveinteger number of bits. The transmission format corresponding to thefirst radio signal is one transmission format in a first format set, andthe first format set includes a first transmission format and a secondtransmission format. A radio signal corresponding to the firsttransmission format includes P radio sub-signal(s), each of the P radiosub-signal(s) carries the first bit block, each of the P radiosub-signal(s) is transmitted by a same antenna port group, and the P isa positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one at moreantenna ports.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal.

In one embodiment, the phrase that a given radio signal carrying a givenbit block refers that: the given radio signal is an output after thegiven bit block experiences in sequence channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals.

In one embodiment, the phrase that a given radio signal carrying a givenbit block refers that the given bit block is used for generating thegiven radio signal.

In one embodiment, the P is greater than 1, and time domain resourcesoccupied by any two of the P radio sub-signals are orthogonal.

In one embodiment, the P is equal to 1.

In one embodiment, the first bit block is a Transport Block (TB).

In one embodiment, the first bit block includes two TBs.

In one embodiment, the radio sub-signal includes a reference signal.

In one embodiment, the first signaling indicates from the first formatset the transmission format corresponding to the first radio signal.

In one embodiment, a payload size of the first signaling is differentfor the first transmission format and the second transmission format. Inone embodiment, the UE determines the transmission format correspondingto the first radio signal according to the payload size of the firstsignaling.

In one embodiment, a payload size of the first signaling is same for thefirst transmission format and the second transmission format, and thefirst signaling indicates explicitly the transmission formatcorresponding to the first radio signal. In one subembodiment, aninformation bit in the first signaling indicates if the transmissionformat corresponding to the first radio signal is the first transmissionformat or the second transmission format.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of (occupied time-frequency resources, a Modulation and CodingScheme (MCS), a Redundancy Version (RV), a HARQ Process Number).

In one embodiment, a physical layer channel corresponding to the firstradio signal includes a downlink physical layer data channel (that is, adownlink channel capable of carrying physical layer data). In oneembodiment, the downlink physical layer data channel is a PhysicalDownlink Shared Channel (PDSCH). In one embodiment, the downlinkphysical layer data channel is a short PDSCH (sPDSCH).

In one embodiment, a transport channel corresponding to the first radiosignal is a Downlink Shared Channel (DL-SCH).

In one embodiment, a physical layer channel corresponding to the firstsignaling includes a downlink physical layer control channel (that is, adownlink channel capable of carrying physical layer signalings only). Inone embodiment, the downlink physical layer control channel is aPhysical Downlink Control Channel (PDCCH). In one embodiment, thedownlink physical layer control channel is a short PDCCH (sPDCCH).

In one embodiment, the first signaling is Downlink Control Information(DCI).

In one embodiment, the antenna port group includes one antenna port.

In one embodiment, the antenna port group includes more than one antennaport.

In one embodiment, at least two of the Q antenna port groups includedifferent numbers of antenna ports.

In one embodiment, the Q antenna port groups include a same number ofantenna ports.

In one embodiment, the first signaling is used for determining thenumber of antenna ports in the antenna port group.

In one embodiment the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: small-scale characteristics ofa radio channel over which a signal transmitted by a first antenna portis conveyed cannot be used to deduce small-scale characteristics of aradio channel over which a signal transmitted by a second antenna portis conveyed. The first antenna port and the second antenna port belongto any two different antenna port groups among the Q antenna port groupsrespectively, and the small-scale characteristics include a channelimpulse response.

In one embodiment, the antenna port is formed by superposition ofmultiple antennas through antenna virtualization, and mappingcoefficients from the multiple antennas to the antenna port constitute abeamforming vector. The phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: beamforming vectorscorresponding to any two antenna ports in the Q antenna port groupscannot be assumed to be same.

In the above embodiment, different antenna port groups may transmit thefirst radio signal employing different beamforming vectors, and thedifferent beamforming vectors point to different directionsrespectively. When a serving base station of the UE acquires a (partial)CSI of a downlink channel, the serving base station may trammit thefirst radio signal on one same antenna port group through a beamformingvector pointing to the UE, to improve the quality of reception of thefirst radio signal. When the (partial) CSI of the downlink channelfails, the serving base station may transmit the first radio signal onQ>1 antenna port groups through different beamforming vectorsrespectively, to ensure that the UE can receive the first radio signalin any direction.

In one embodiment, the beamforming vector corresponding to the antennaport is formed by a product of an analog beamforming matrix and adigital beamforming vector. In one subembodiment, the Q antenna portgroups correspond to Q analog beamforming matrixes respectively, andantenna ports in one same antenna port group correspond to one sameanalog beamforming matrix. In one subembodiment, antenna ports indifferent antenna port groups correspond to different analog beamformingmatrixes. In one subembodiment, different antenna ports in one sameantenna port group correspond to different digital beamforming vectors.

In one embodiment, the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: the UE cannot perform acombined channel estimation using reference signals transmitted by anytwo antenna ports in the Q antenna port groups.

In one embodiment, the P is not equal to the Q.

In one embodiment, the P is equal to the Q.

In one embodiment, the first format set further includes at least oneadditional transmission format different from the first transmissionformat and the second transmission format.

In one embodiment, the first transmission format corresponds to one of(single-antenna transmission, transmit diversity, large delay CyclicDelay Diversity (large delay CDD), closed-loop Spatial Multiplexing(closed-loop SM), Multi-User Multiple-Input-Multiple-Output (MU-MIMO)).

In one embodiment, different antenna ports in one same antenna portgroup transmit the first radio signal through one mode among(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO, TDM, Frequency Division Multiplexing (FDM),Code Division Multiplexing (CDM)).

Specifically, according to one aspect of the present disclosure, themethod includes:

receiving a second signaling.

Herein, the second signaling is a high-layer signaling, the secondsignaling is used for determining the first format set, the first formatset is one of K candidate format sets, and the K is a positive integergreater than 1.

In one embodiment, the second signaling is a Radio Resource Control(RRC) signaling.

In one embodiment, the second signaling is UE specific.

In one embodiment, each candidate format set among the K candidateformat sets includes the first transmission format. In onesubembodiment, the first transmission format corresponds to transmitdiversity.

In one embodiment, the candidate format set consists of two transmissionformats.

In one embodiment, the candidate format set consists of threetransmission formats.

In one embodiment, at least two of the K candidate format sets includedifferent numbers of transmission formats.

Specifically, according to one aspect of the present disclosure, a timeduration of time domain resources occupied by the first radio signal isunrmelated to the transmission format corresponding to the first radiosignal.

In one embodiment, the above aspect ensures that the processing time ofthe UE receiver is independent of the transmission format correspondingto the first radio signal, thus reducing the complexity of the UE.

In one embodiment, the time domain resources occupied by the first radiosignal are unrelated to the transmission format corresponding to thefirst radio signal.

In one embodiment, the P is 1, and time domain resources occupied by anytwo of the Q radio sub-signals are orthogonal. In one subembodiment,time domain resources occupied by the Q radio sub-signals areconsecutive. In one subembodiment, the first bit block corresponds to afirst Transport Time Interval (TTI); a physical layer channel to which agiven radio sub-signal is mapped, in the case of the second transmissionformat, corresponds to a TTI which has a less time duration than thefirst TTI; and the given radio sub-signal is any of the Q radiosub-signals. In one subembodiment, the Q radio sub-signals include atleast two radio sub-signals, and physical layer channels to which thetwo radio sub-signals are mapped, in the case of the second transmissionformat, correspond to TTIs of different time durations.

Specifically, according to one aspect of the present disclosure, themethod includes:

transmitting a third signaling.

Herein, the third signaling is used for indicating whether the firstradio signal is correctly received.

In one embodiment, the third signaling includes Uplink ControlInformation (UCI).

In one embodiment, a physical layer channel corresponding to the thirdsignaling includes an uplink physical layer control channel (that is, anuplink channel capable of carrying physical layer signalings only). Inone embodiment, the uplink physical layer control channel is a PhysicalUplink Control Channel (PUCCH).

In one embodiment, a physical layer channel corresponding to the thirdsignaling includes an uplink physical layer data channel (that is, anuplink channel capable of carrying physical layer data). In oneembodiment, the uplink physical layer data channel is a Physical UplinkShared Channel (PUSCH).

In one embodiment, a transport channel corresponding to the thirdsignaling is an Uplink Shared Channel (UL-SCH).

Specifically, according to one aspect of the present disclosure, themethod includes:

receiving a second radio signal, the second radio signal carrying thefirst bit block.

Herein, a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different from thetransmission format corresponding to the first radio signal.

In one embodiment, an RV corresponding to the second radio signal isdifferent from an RV corresponding to the first radio signal.

In one embodiment, a New Data Indicator (NDI) corresponding to thesecond radio signal is different from an NDI corresponding to the firstradio signal.

In one embodiment, the second radio signal is transmitted after thethird signaling.

The present disclosure provides a method in a base station in wirelesstransmission, wherein the method includes:

transmitting a first signaling; and

transmitting a first radio signal, the first radio signal carrying afirst bit block.

Herein, the first signaling is a physical layer signaling, the firstsignaling is used for determining a transmission format corresponding tothe first radio signal, and the first bit block includes a positiveinteger number of bits. The transmission format corresponding to thefirst radio signal is one transmission format in a first format set, andthe first format set includes a first transmission format and a secondtransmission format. A radio signal corresponding to the firsttransmission format includes P radio sub-signal(s), each of the P radiosub-signal(s) carries the first bit block, each of the P radiosub-signal(s) is transmitted by a same antenna port group, and the P isa positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one or moreantenna ports.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal.

In one embodiment, the P is greater than 1, and time domain resourcesoccupied by any two of the P radio sub-signals are orthogonal.

In one embodiment, the P is equal to 1.

In one embodiment, the first bit block is a TB.

In one embodiment, the first bit block includes two TBs.

In one embodiment, the radio sub-signal includes a reference signal.

In one embodiment, the first signaling indicates from the first formatset the transmission format corresponding to the first radio signal.

In one embodiment, a payload size of the first signaling is differentfor the first transmission format and the second transmission format. Inone embodiment, the UE determines the transmission format correspondingto the first radio signal according to the payload size of the firstsignaling.

In one embodiment, a payload size of the first signaling is same for thefirst transmission format and the second transmission format, and thefirst signaling indicates explicitly the transmission formatcorresponding to the first radio signal. In one subembodiment, aninformation bit in the first signaling indicates if the transmissionformat corresponding to the first radio signal is the first transmissionformat or the second transmission format.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of (occupied time-frequency resources, an MCS, an RV, a HARQProcess Number).

In one embodiment, a physical layer channel corresponding to the firstradio signal includes a downlink physical layer data channel (that is, adownlink channel capable of carrying physical layer data). In oneembodiment, the downlink physical layer data channel is a PDSCH. In oneembodiment, the downlink physical layer data channel is a sPDSCH.

In one embodiment, a transport channel corresponding to the first radiosignal is a DL-SCH.

In one embodiment, a physical layer channel corresponding to the firstsignaling includes a downlink physical layer control channel (that is, adownlink channel capable of carrying physical layer signalings only). Inone embodiment, the downlink physical layer control channel is a PDCCH.In one embodiment, the downlink physical layer control channel is asPDCCH.

In one embodiment, the first signaling is a DCI.

In one embodiment, the antenna port group includes one antenna port.

In one embodiment, the antenna port group includes more than one antennaport.

In one embodiment, at least two of the Q antenna port groups includedifferent numbers of antenna ports.

In one embodiment, the Q antenna port groups include a same number ofantenna ports.

In one embodiment, the first signaling is used for determining a numberof antenna ports in the antenna port group.

In one embodiment, the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: small-scale characteristics ofa radio channel over which a signal transmitted by a first antenna portis conveyed cannot be used to deduce small-scale characteristics of aradio channel over which a signal transmitted by a second antenna portis conveyed. The first antenna port and the second antenna port belongto any two different antenna port groups among the Q antenna port groupsrespectively, and the small-scale characteristics include a channelimpulse response.

In one embodiment, the antenna port is formed by superposition ofmultiple antennas through antenna virtualization, and mappingcoefficients from the multiple antennas to the antenna port constitute abeamforming vector. The phrase that any two of the Q antenna port groupscannot be assumed to be same refers that beamforming vectorscorresponding to any two antenna ports in the Q antenna port groupscannot be assumed to be same.

In the above embodiment, different antenna port groups may transmit thefirst radio signal employing different beamforming vectors, and thedifferent beamforming vectors point to different directionsrespectively. When a serving base station of the UE acquires a (partial)CSI of a downlink channel, the serving base station may transmit thefirst radio signal on one same antenna port group through a beamformingvector pointing to the UE, to improve the quality of reception of thefirst radio signal. When the (partial) CSI of the downlink channelfails, the serving base station may transmit the first radio signal onQ>1 antenna port groups through different beamforming vectorsrespectively, to ensure that the UE can receive the first radio signalin any direction.

In one embodiment, the beamforming vector corresponding to the antennaport is formed by a product of an analog beamforming matrix and adigital beamforming vector. In one subembodiment, the Q antenna portgroups correspond to Q analog beamforming matrixes respectively, andantenna parts in one same antenna port group correspond to one sameanalog beamforming matrix. In one subembodiment, antenna ports indifferent antenna port groups correspond to different analog beamformingmatrixes. In one subembodiment, different antenna ports in one sameantenna port group correspond to different digital beamforming vectors.

In one embodiment, the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: the UE cannot perform acombined channel estimation using reference signals transmitted by anytwo antenna ports in the Q antenna port groups.

In one embodiment, the P is not equal to the Q.

In one embodiment, the P is equal to the Q.

In one embodiment, the first format set further includes at least oneadditional transmission format different from the first transmissionformat and the second transmission format.

In one embodiment, the first transmission format corresponds to one of(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO).

In one embodiment, different antenna ports in one same antenna portgroup transmit the first radio signal through one mode among(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO, TDM, FDM, CDM).

Specifically, according to one aspect of the present disclosure, themethod includes:

transmitting a second signaling.

Herein, the second signaling is a high-layer signaling, the secondsignaling is used for determining the first format set, the first formatset is one of K candidate format sets, and the K is a positive integergreater than 1.

In one embodiment, the second signaling is an RRC signaling.

In one embodiment, the second signaling is UE specific.

In one embodiment, each of the K candidate format sets includes thefirst transmission format. In one subembodiment, the first transmissionformat corresponds to transmit diversity.

In one embodiment, the candidate format set consists of two transmissionformats.

In one embodiment, the candidate format set consists of threetransmission formats.

In one embodiment, at least two of the K candidate format sets includedifferent numbers of transmission formats.

Specifically, according to one aspect of the present disclosure, a timeduration of time domain resources occupied by the first radio signal isunrelated to the transmission format corresponding to the first radiosignal.

In one embodiment, the above aspect ensures that the processing time ofthe UE receiver is independent of the transmission format correspondingto the first radio signal, thus reducing the complexity of the UE.

In one embodiment, the time domain resources occupied by the first radiosignal are unrelated to the transmission format corresponding to thefirst radio signal.

In one embodiment, the P is 1, and time domain resources occupied by anytwo of the Q radio sub-signals are orthogonal. In one subembodiment,time domain resources occupied by the Q radio sub-signals areconsecutive. In one subembodiment, the first bit block corresponds to afirst TTI; a physical layer channel to which a given radio sub-signal ismapped, in the case of the second transmission format, corresponds to aTTI which has a less time duration than the first TTI; and the givenradio sub-signal is any of the Q radio sub-signals. In onesubembodiment, the Q radio sub-signals include at least two radiosub-signals, and physical layer channels to which the two radiosub-signals are mapped, in the case of the second transmission format,correspond to TTIs of different time durations.

Specifically, according to one aspect of the present disclosure, themethod includes:

receiving a third signaling.

Herein, the third signaling is used for indicating whether the firstradio signal is correctly received.

In one embodiment, the third signaling includes an UCI.

In one embodiment, a physical layer channel corresponding to the thirdsignaling includes an uplink physical layer control channel (that is, anuplink channel capable of carrying physical layer signalings only). Inone embodiment, the uplink physical layer control channel is a PUCCH.

In one embodiment, a physical layer channel corresponding to the thirdsignaling includes an uplink physical layer data channel (that is, anuplink channel capable of carrying physical layer data). In oneembodiment, the uplink physical layer data channel is a PUSCH.

In one embodiment, a transport channel corresponding to the thirdsignaling is an UL-SCH.

Specifically, according to one aspect of the present disclosure, themethod includes:

transmitting a second radio signal, the second radio signal carrying thefirst bit block.

Herein, a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different fromn thetransmissicn format corresponding to the first radio signal.

In one embodiment, an RV corresponding to the second radio signal isdifferent from an RV corresponding to the first radio signal.

In one embodiment, an NDI corresponding to the second radio signal isdifferent from an NDI corresponding to the first radio signal.

The present disclosure provides a UE in wireless transmission, whereinthe UE includes:

a first receiver, to receive a first signaling; and

a second receiver, to receive a first radio signal, the first radiosignal carrying a first bit block.

Herein, the first signaling is a physical layer signaling, the firstsignaling is used for determining a transmission format corresponding tothe first radio signal, and the first bit block includes a positiveinteger number of bits. The transmission format corresponding to thefirst radio signal is one transmission format in a first format set, andthe first format set includes a first transmission format and a secondtransmission format. A radio signal corresponding to the firsttransmission format includes P radio sub-signal(s), each of the P radiosub-signal(s) carries the first bit block, each of the P radiosub-signal(s) is transmitted by a same antenna port group, and the P isa positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one or moreantenna ports.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal.

In one embodiment, the P is greater than 1, and time domain resourcesoccupied by any two of the P radio sub-signals are orthogonal.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of (occupied time-frequency resources, an MCS, an RV, a HARQProcess Number).

In one embodiment, the first signaling is a DCI.

In one embodiment, the first transmission format corresponds to one of(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO).

Specifically, the above UE is characterized in that the second receiverfurther receives a second signaling.

Herein, the second signaling is a high-layer signaling, the secondsignaling is used for determining the first format set, the first formatset is one of K candidate format sets, and the K is a positive integergreater than 1.

In one embodiment, the second signaling is an RRC signaling.

In one embodiment, each of the K candidate format sets includes thefirst transmission format. In one subembodiment, the first transmissionformat corresponds to transmit diversity.

Specifically, the above UE is characterized in that a time duration oftime domain resources occupied by the first radio signal is unrelated tothe transmission format corresponding to the first radio signal.

Specifically, the above UE includes:

a first transmitter, to transmit a third signaling.

Herein, the third signaling is used for indicating whether the firstradio signal is correctly received.

In one embodiment, the third signaling includes an UCI.

Specifically, the above UE is characterized in that the second receiverfurther receives a second radio signal, the second radio signal carryingthe first bit block.

Herein, a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different from thetransmission format corresponding to the first radio signal.

The present disclosure provides a base station in wireless transmission,wherein the base station includes:

a second transmitter, to transmit a first signaling; and

a third transmitter, to transmit a first radio signal, the first radiosignal carrying a first bit block.

Herein, the first signaling is a physical layer signaling, the firstsignaling is used for determining a transmission format corresponding tothe first radio signal, and the first bit block includes a positiveinteger number of bits. The transmission format corresponding to thefirst radio signal is one transmission format in a first format set, andthe first format set includes a first transmission format and a secondtransmission format. A radio signal corresponding to the firsttransmission format includes P radio sub-signal(s), each of the P radiosub-signal(s) carries the first bit block, each of the P radiosub-signal(s) is transmitted by a same antenna port group, and the P isa positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one or moreantenna parts.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal.

In one embodiment, the P is greater than 1, and time domain resourcesoccupied by any two of the P radio sub-signals are orthogonal.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of (occupied time-frequency resources, an MCS, an RV, a HARQProcess Number).

In one embodiment, the first signaling is a DCI.

In one embodiment, the first transmission format corresponds to one of{single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO}.

Specifically, the above base station is characterized in that the thirdtransmitter further transmits a second signaling.

Herein, the second signaling is a high-layer signaling, the secondsignaling is used for determining the first format set, the first formatset is one of K candidate format sets, and the K is a positive integergreater than 1.

In one embodiment, the second signaling is an RRC signaling.

In one embodiment, each of the K candidate format sets includes thefirst transmission format. In one subembodiment, the first transmissionformat corresponds to transmit diversity.

Specifically, the above base station is characterized in that a timeduration of time domain resources occupied by the first radio signal isunrelated to the transmission format corresponding to the first radiosignal.

Specifically, the above base station includes:

a third receiver, to receive a third signaling.

Herein, the third signaling is used for indicating whether the firstradio signal is correctly received.

In one embodiment, the third signaling includes an UCI.

Specifically, the above base station is characterized in that the thirdtransmitter further transmits a second radio signal, the second radiosignal carrying the first bit block.

Herein, a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different from thetransmission format corresponding to the first radio signal.

Compared with conventional schemes, the present disclosure has thefollowing benefits.

The base station can select the transmission mode of downlink dataflexibly according to the acquired CSI of a downlink channel targetingthe served UE, thereby keeping the robustness of the downlinktransmission all the time.

When the downlink channel CSI acquired previously fails due to somereasons (for example, movement of UE, etc.) and the UE cannot receivedownlink data correctly, the base station can change to the beamsweeping scheme in time to transmit the retransmission data of the UE,thereby guaranteeing the quality of retransmission and reducing thedelay of retransmission.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, purposes and advantages of the present disclosure willbecome more apparent from the detailed description of non-restrictiveembodiments taken in conjunction with the following drawings.

FIG. 1 is a flowchart of a first signaling and a first radio signalaccording to one embodiment of the present disclosure.

FIG. 2 is a diagram illustrating a network architecture according to oneembodiment of the present disclosure.

FIG. 3 is a diagram illustrating an embodiment of a radio protocolarchitecture of a user plane and a control plane according to oneembodiment of the present disclosure.

FIG. 4 is a diagram illustrating a New Radio (NR) node and a UEaccording to one embodiment of the present disclosure.

FIG. 5 is a flowchart of a wireless transmission according to oneembodiment of the present disclosure.

FIG. 6 is a diagram illustrating a resource mapping of a radio signalcorresponding to a first transmission format and a resource mapping of aradio signal corresponding to a second transmission format according toone embodiment of the present disclosure.

FIG. 7 is a diagram illustrating an antenna structure according to oneembodiment of the present disclosure.

FIG. 8 is a structure block diagram illustrating a processing device ina UE according to one embodiment of the present disclosure.

FIG. 9 is a structure block diagram illustrating a processing device ina base station according to one embodiment of the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

The technical scheme of the present disclosure is described below infurther details in conjunction with the drawings. It should be notedthat the embodiments in the present disclosure and the characteristicsof the embodiments may be arbitrarily combined if no conflict is caused.

Embodiment 1

Embodiment 1 illustrates an example of a flowchart of a first signalingand a first radio signal, as shown in FIG. 1.

In Embodiment 1, the UE in the present disclosure receives a firstsignaling, and receives a first radio signal, the first radio signalcarrying a first bit block. Herein, the first signaling is a physicallayer signaling, the first signaling is used for determining atransmission format corresponding to the first radio signal, and thefirst bit block includes a positive integer number of bits; thetransmission format corresponding to the first radio signal is onetransmission format in a first format set, and the first format setincludes a first transmission format and a second transmission format; aradio signal corresponding to the first transmission format includes Pradio sub-signal(s), each of the P radio sub-signal(s) carries the firstbit block, each of the P radio sub-signal(s) is transmitted by a sameantenna port group, and the P is a positive integer; a radio signalcorresponding to the second transmission format includes Q radiosub-signals, each of the Q radio sub-signals carries the first bitblock, the Q radio sub-signals are transmitted by Q antenna port groupsrespectively, any two of the Q antenna port groups cannot be assumed tobe same, and the Q is an integer greater than 1; and the antenna portgroup includes one or more antenna ports.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal.

In one embodiment, the phrase that a given radio signal carrying a givenbit block refers that the given radio signal is an output after thegiven bit block experiences in sequence channel coding, modulationmapper, layer mapper, precoding, resource element mapper, and generationof OFDM signals.

In one embodiment, the phrase that a given radio signal carying a givenbit block refers that the given bit block is used for generating thegiven radio signal.

In one embodiment, the P is greater than 1, and time domain resourcesoccupied by any two of the P radio sub-signals are orthogonal.

In one embodiment, the P is equal to 1.

In one embodiment, the first bit block is a TB.

In one embodiment, the first bit block includes two TBs.

In one embodiment, the radio sub-signal includes a reference signal.

In one embodiment, the first signaling indicates from the first formatset the transmission format corresponding to the first radio signal.

In one embodiment, a payload size of the first signaling is differentfor the first transmission format and the second transmission format. Inone embodiment, the UE determines the transmission format correspondingto the first radio signal according to the payload size of the firstsignaling.

In one embodiment, a payload size of the first signaling is the same forthe first transmission format and the second transmission format, andthe first signaling indicates explicitly the transmission formatcorresponding to the first radio signal. In one subembodiment, aninformation bit in the first signaling indicates if the transmissionformat corresponding to the first radio signal is the first transmissionformat or the second transmission format.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of (occupied time-frequency resources, an MCS, an RV, a HARQProcess Number).

In one embodiment, a physical layer channel corresponding to the firstradio signal includes a downlink physical layer data channel (that is, adownlink channel capable of carrying physical layer data). In oneembodiment, the downlink physical layer data channel is a PDSCH. In oneembodiment, the downlink physical layer data channel is a sPDSCH.

In one embodiment, a transport channel corresponding to the first radiosignal is a DL-SCH.

In one embodiment, a physical layer channel corresponding to the firstsignaling includes a downlink physical layer control channel (that is, adownlink channel capable of carrying physical layer signalings only). Inone embodiment, the downlink physical layer control channel is a DCCH.In one embodiment, the downlink physical layer control channel is asPDCCH.

In one embodiment, the first signaling is a DCI.

In one embodiment, the antenna port group includes one antenna port.

In one embodiment, the antenna port group includes mare than one antennaport.

In one embodiment, at least two of the Q antenna port groups includedifferent numbers of antenna ports.

In one embodiment, the Q antenna port groups include a same number ofantenna ports.

In one embodiment, the first signaling is used for determining a numberof antenna ports in the antenna port group.

In one embodiment, the phase that any two of the Q antenna port groupscannot be assumed to be same refers that: small-scale characteristics ofa radio channel over which a signal transmitted by a first antenna portis conveyed cannot be used to deduce small-scale characteristics of aradio channel over which a signal transmitted by a second antenna portis conveyed. The first antenna port and the second antenna port belongto any two different antenna port groups among the Q antenna port groupsrespectively, and the small-scale characteristics include a channelimpulse response.

In one embodiment, the antenna port is formed by superposition ofmultiple antennas through antenna virtualization, and mappingcoefficients from the multiple antennas to the antenna port constitute abeamforming vector. The phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: beamforming vectorscorresponding to any two antenna ports in the Q antenna port groupscannot be assumed to be same.

In the above embodiment, different antenna port groups may transmit thefirst radio signal employing different beamforming vectors, and thedifferent beamforming vectors point to different directionsrespectively. When a serving base station of the UE acquires a (partial)CSI of a downlink channel, the serving base station may transmit thefirst radio signal on one same antenna port group through a beamformingvector pointing to the UE, to improve the quality of reception of thefirst radio signal. When the (partial) CSI of the downlink channelfails, the serving base station may transmit the first radio signal onQ>1 antenna port groups through different beamforming vectorsrespectively, to ensure that the UE can receive the first radio signalin any direction.

In one embodiment, the beamforming vector corresponding to the antennaport is formed by a product of an analog beamforming matrix and adigital beamforming vector. In one subembodiment, the Q antenna portgroups correspond to Q analog beamforming matrixes respectively, andantenna ports in one same antenna port group correspond to one sameanalog beamforming matrix. In one subembodiment, antenna ports indifferent antenna port groups correspond to different analog beamformingmatrixes. In one subembodiment, different antenna ports in one sameantenna port group correspond to different digital beamforming vectors.

In one embodiment, the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: the UE cannot perform acombined channel estimation using reference signals transmitted by anytwo antenna ports in the Q antenna port groups.

In one embodiment, the P is not equal to the Q.

In one embodiment, the P is equal to the Q.

In one embodiment, the first format set further includes at least oneadditional transmission format different from the first transmissionformat and the second transmission format.

In one embodiment, the first transmission format corresponds to one of(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO).

In one embodiment, different antenna ports in one same antenna portgroup transmit the first radio signal through one mode among(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO, TDM, FDM, CDM).

Embodiment 2

Embodiment 2 illustrates an example of a diagram of a networkarchitecture, as shown in FIG. 2.

FIG. 2 illustrates a network architecture 200 of Long-Term Evolution(LTE), Long-Term Evolution Advanced (LTE-A) and future 50 systems. TheLTE, LTE-A and 50 system network architecture 200 may be called anEvolved Packet System (EPS) 200. The EPS 200 may include one or more UEs201, an Evolved UMTS Terrestrial Radio Access Network-New Radio(E-UTRAN-NR) 202, a 5G-Core Network/Evolved Packet Core (5G-CN/EPC) 210,a Home Subscriber Server (HSS) 220 and an Internet Service 230. Herein,the UMTS represents Universal Mobile Telecommunication System. The EPSmay be interconnected with other access networks. For simpledescription, the entities/interfaces are not shown. As shown in FIG. 2,the EPS provides packet switching services. Those skilled in the art areeasy to understand that various concepts presented throughout thepresent disclosure can be extended to networks providing circuitswitching services. The E-UTRAN-NR includes an NR node B (gNB) 203 andother gNBs 204. The gNB 203 provides UE 201 oriented user plane andcontrol plane protocol terminations. The gNB 203 may be connected toother gNBs 204 via an X2 interface (for example, backhaul). The gNB 203may be called a base station, a base transceiver station, a radio basestation, a radio transceiver, a transceiver function, a Basic ServiceSet (BSS), an Extended Service Set (ESS), a Transmitter Receiver Point(TRP) or other appropriate terms. The gNB 203 provides an access pointof the 5G-CN/EPC 210 for the UE 201. Examples of UE 201 include cellularphones, smart phones, Session Initiation Protocol (SIP) phones, laptopcomputers, Personal Digital Assistants (PDAs), Satellite Radios, GlobalPositioning Systems (GPSs), multimedia devices, video devices, digitalaudio player (for example, MP3 players), cameras, games consoles,unmanned aerial vehicles, air vehicles, narrow-band physical networkequipment, machine-type communication equipment, land vehicles,automobiles, wearable equipment, or any other devices having similarfunctions. Those skilled in the art also can call the UE 201 a mobilestation, a subscriber station, a mobile unit, a subscriber unit, awireless unit, a remote unit, a mobile device, a wireless device, aradio communication device, a remote device, a mobile subscriberstation, an access terminal, a mobile terminal, a wireless terminal, aremote terminal, a handset, a user proxy, a mobile client, a client orother appropriate terms. The gNB 203 is connected to the 5G-CN/EPC 210via an Si interface. The 5G-CN/EPC 210 includes an MME 211, other MMEs214, a Service Gateway (S-GW) 212 and a Packet Data Network Gateway(P-GW) 213. The MME 211 is a control node for processing a signalingbetween the UE 201 and the 5G-CN/EPC 210. Generally, the MME 211provides bearer and connection management. All user Internet Protocol(IP) packets are transmitted through the S-GW 212. The S-GW 212 isconnected to the P-GW 213. The P-GW 213 provides UE IP addressallocation and other functions. The P-GW 213 is connected to theInternet service 230. The Internet service 230 includes IP servicescorresponding to operators, specifically including Internet, Intranet,IP Multimedia Subsystems (IP IMSs) and Packet Switching StreamingServices (PSSs).

In one embodiment, the gNB 203 corresponds to the base station in thepresent disclosure.

In one embodiment, the UE 201 corresponds to the UE in the presentdisclosure.

In one subembodiment, the gNB 203 supports multi-antenna transmission.

In one subembodiment, the UE 201 supports multi-antenna transmission.

Embodiment 3

Embodiment 3 illustrates an example of a diagram of an embodiment of aradio protocol architecture of a user plane and a control plane, asshown in FIG. 3.

FIG. 3 is a diagram illustrating an embodiment of a radio protocolarchitecture of a user plane and a control plane. In FIG. 3, the radioprotocol architecture of a UE and a gNB is represented by three layers,which are layer 1, layer 2 and layer 3 respectively. The layer 1 (L1)301 is the lowest layer and performs signal processing functions of eachPHY layer. The layer 1 is called PHY 301 in this paper. The layer 2 (L2)305 is above the PHY 301, and is in charge of the link between the UEand the gNB via the PHY 301. In the user plane, the L2 305 includes aMedium Access Control (MAC) sublayer 302, a Radio Link Control (RLC)sublayer 303, and a Packet Data Convergence Protocol (PDCP) sublayer304. All the three sublayers terminate at the gNB of the network side.Although not described in FIG. 3, the UE may include several higherlayers above the L2 305, such as a network layer (i.e. IP layer)terminated at the P-GW 213 of the network side and an application layerterminated at the other side (i.e. a peer UE, a server, etc.) of theconnection. The PDCP sublayer 304 provides multiplexing among variableradio bearers and logical channels. The PDCP sublayer 304 also providesa header compression for a higher-layer packet so as to reduce a radiotransmission overhead. The PDCP sublayer 304 provides security byencrypting a packet and provides support for UE handover between gNBs.The RLC sublayer 303 provides segmentation and reassembling of ahigher-layer packet, retransmission of lost packets, and reordering oflost packets to as to compensate the disordered receiving caused byHybrid Automatic Repeat Request (HARQ). The MAC sublayer 302 providesmultiplexing between logical channels and transport channels. The MACsublayer 302 is also responsible for allocating between UEs variousradio resources (i.e., resource block) in a cell. The MAC sublayer 302is also in charge of HARQ operation. In the control plane, the radioprotocol architecture of the UE and the gNB is almost the same as theradio protocol architecture in the user plane on the PHY 301 and the L2305, but there is no header compression function for the control plane.The control plane also includes a Radio Resource Control (RRC) sublayer306 in the layer 3 (L3). The RRC sublayer 306 is responsible foracquiring radio resources (i.e. radio bearer) and configuring lowerlayers using an RRC signaling between the gNB and the UE.

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the UE in the present disclosure.

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the base station in the present disclosure.

In one embodiment, the first signaling in the present disclosure isgenerated by the PHY 301.

In one embodiment, the first radio signal in the present disclosure isgenerated by the PHY 301.

In one embodiment, the second signaling in the present disclosure isgenerated by the RRC sublayer 306.

In one embodiment, the third signaling in the present disclosure isgenerated by the PHY 301.

In one embodiment, the second radio signal in the present disclosure isgenerated by the PHY 301.

Embodiment 4

Embodiment 4 illustrates an example of a diagram of an NR node and a UE,as shown in FIG. 4. FIG. 4 is a block diagram of a UE 450 and a gNB 410that communicate with each other in an access network.

The gNB 410 includes a controller/processor 475, a memory 476, areceiving processor 470, a transmitting processor 416, a multi-antennareceiving processor 472, a multi-antenna transmitting processor 471, atransmitter/receiver 418 and an antenna 420.

The UE 450 includes a controller/processor 459, a memory 460, a datasource 467, a transmitting processor 468, a receiving processor 456, amulti-antenna transmitting processor 457, a multi-antenna receivingprocessor 458, a transmitter/receiver 454 and an antenna 452.

In Downlink (DL) transmission, at the gNB 410, a higher-layer packetfrom a core network is provided to the controller/processor 475. Thecontroller/processor 475 provides a function of layer 2. In downlinktransmission, the controller/processor 475 provides header compression,encryption, packet segmentation and reordering, multiplexing between alogical channel and a transport channel, and a radio resource allocationfor the UE 450 based on various priorities. The controller/processor 475is also in charge of HARQ operation, retransmission of lost packets, anda signaling to the UE 450. The transmitting processor 416 and themulti-antenna transmitting processor 471 perform signal processingfunctions used for layer 1 (that is, physical layer). The transmittingprocessor 416 performs encoding and interleaving so as to ensure a FEC(Forward Error Correction) at the UE 450 side and the mapping to signalclusters corresponding to different modulation schemes (i.e., BPSK,QPSK, M-PSK M-QAM, etc.). The multi-antenna transmitting processor 471processes the encoded and modulated symbols by digital spatial precoding(including precoding based on codebook and precoding based onnon-codebook) and beamforming processing to generate one or more spatialstreams. The transmitting processor 416 subsequently maps each spatialstream into subcarriers to be multiplexed with reference signals (i.e.,pilots) in a time domain and/or frequency domain, and then processes itwith Inverse Fast Fourier Transform (IFFT) to generate a physicalchannel carrying a time-domain multicarrier symbol stream. Then, themulti-antenna transmitting processor 471 processes the time-domainmulticarrier symbol streams by a transmitting analogprecoding/beamforming operation. Each transmitter 418 converts abaseband multicarrier symbol stream provided by the multi-antennatransmitting processor 471 into a radio frequency stream and thenprovides it to the corresponding antenna 420.

In downlink transmission, at the UE 450, each receiver 454 receives asignal via the corresponding antenna 452. Each receiver 454 recovers theinformation modulated to an RF carrier and converts a radio frequencystream into a baseband multicarrier symbol stream to provide to thereceiving processor 456. The receiving processor 456 and themulti-antenna receiving processor 458 perform signal processingfunctions of layer 1. The multi-antenna receiving processor 458processes the baseband multicarrier symbol stream coming from thereceiver 454 by a receiving analog precoding/beamforming operation. Thereceiving processor 458 converts the baseband multicarrier symbol streamsubjected to a receiving analog precoding/beamforming operation from atime domain into a frequency domain using FFT (Fast Fourier Transform).In the frequency domain, physical layer data signals and referencesignals are demultiplexed by the receiving processor 456, wherein thereference signals are used for channel estimation, and the data signalsare subjected to multi-antenna detection in the multi-antenna receivingprocessor 458 to recover any spatial stream targeting the UE 450.Symbols on each spatial stream are demodulated and recovered in thereceiving processor 456 to generate a soft decision. Then, the receivingprocessor 456 decodes and de-interleaves the soft decision to recoverthe higher-layer data and control signals on the physical channeltransmitted by the gNB 410. Next, the higher-layer data and controlsignals are provided to the controller/processor 459. Thecontroller/processor 459 performs functions of layer 2. Thecontroller/processor 459 may be connected to the memory 460 that storesprogram codes and data. The memory 460 may be called a computer readablemedia. In downlink transmission, the controller/processor 459 providesmultiplexing between the transport channel and the logical channel,packet reassembling, decryption, header decompression, and controlsignal processing so as to recover higher-layer packets coming from thecore network. The higher-layer packets are then provided to all protocollayers above layer 2, or various control signals can be provided tolayer 3 for processing. The controller/processor 459 can also performerror detection using ACK and/or NACK protocols to support the HARQoperation.

In the uplink transmission, at the UE 450, the data source 467 provideshigher-layer packets to the controller/processor 459. The data source467 represents all protocol layers above L2 layer. Similar as thetransmitting function of the gNB 410 described in downlink transmission,the controller/processor 459 provides header compression, encryption,packet segmentation and reordering, and multiplexing between a logicalchannel and a transport channel based on the radio resource allocationof the base station 410 so as to provide the functions of layer 2 usedfor the control plane and user plane. The controller/processor 459 isalso in charge of HARQ operation, retransmission of lost packets, andsignaling to the gNB 410. The transmitting processor 468 conductsmodulation mapping and channel encoding processing; the multi-antennatransmitting processor 457 performs digital multi-antenna spatialprecoding (including precoding based on codebook and precoding based onnon-codebook) and beamforming processing, and subsequently, thetransmitting processor 468 modulates the generated spatial streams intoone or multicarrier/single-carrier symbol streams, which is/aresubjected to an analog precoding/beamforming operation in themulti-antenna transmitting processor 457 and then is provided to theantennas 452 via the transmitter 454. Each transmitter 452 firstconverts baseband symbol streams provided by the multi-antennatransmitting processor 457 into radio frequency symbol streams and thenprovides the radio frequency symbol streams to the corresponding antenna452.

In uplink transmission, the function of the gNB 410 is similar as thereceiving function of the UE 450 described in the downlink transmission.Each receiver 418 receives a radio frequency signal via thecorresponding antenna 420, converts the received radio frequency signalinto a baseband signal, and provides the baseband signal to themulti-antenna receiving processor 472 and the receiving processor 470.The receiving processor 470 and the multi-antenna receiving processor472 together provide functions of layer 1. The controller/processor 475provides functions of layer 2. The controller/processor 475 may beconnected to the memory 476 that stores program codes and data. Thememory 476 may be called a computer readable media. In uplinktransmission, the controller/processor 475 provides de-multiplexingbetween the transport channel and the logical channel, packetreassembling, decryption, header decompression, and control signalprocessing so as to recover higher-layer packets coming from the UE 450.The higher-layer packets, coming from the controller/processor 475, maybe provided to the core network. The controller/processor 475 can alsoperform error detection using ACK and/or NACK protocols to support theHARQ operation.

In one embodiment, the UE 450 includes at least one processor and atleast one memory. The at least one memory includes computer programcodes. The at least one memory and the computer program codes areconfigured to be used in collaboration with the at least one processor.The UE 450 at least receives the first signaling in the presentdisclosure, and receives the first radio signal in the presentdisclosure, the first radio signal carrying a first bit block. Herein,the first signaling is a physical layer signaling, the first signalingis used for determining a transmission format corresponding to the firstradio signal, and the first bit block includes a positive integer numberof bits; the transmission format corresponding to the first radio signalis one transmission format in a first format set, and the first formatset includes a first transmission format and a second transmissionformat; a radio signal corresponding to the first transmission formatincludes P radio sub-signal(s), each of the P radio sub-signal(s)carries the first bit block, each of the P radio sub-signal(s) istransmitted by a same antenna port group, and the P is a positiveinteger a radio signal corresponding to the second transmission formatincludes Q radio sub-signals, each of the Q radio sub-signals carriesthe first bit block, the Q radio sub-signals are transmitted by Qantenna port groups respectively, any two of the Q antenna port groupscannot be assumed to be same, and the Q is an integer greater than 1;and the antenna port group includes one or more antenna ports.

In one embodiment, the UE 450 includes a memory that stores a computerreadable instruction program. The computer readable instruction programgenerates an action when executed by at least one processor. The actionincludes: receiving the first signaling in the present disclosure, andreceiving the first radio signal in the present disclosure, the firstradio signal carrying a first bit block. Herein, the first signaling isa physical layer signaling, the first signaling is used for determininga transmission format corresponding to the first radio signal, and thefirst bit block includes a positive integer number of bits; thetransmission format corresponding to the first radio signal is onetransmission format in a first format set, and the first format setincludes a first transmission format and a second transmission format; aradio signal corresponding to the first transmission format includes Pradio sub-signal(s), each of the P radio sub-signal(s) carries the firstbit block, each of the P radio sub-signal(s) is transmitted by a sameantenna port group, and the P is a positive integer; a radio signalcorresponding to the second transmission format includes Q radiosub-signals, each of the Q radio sub-signals carries the first bitblock, the Q radio sub-signals are transmitted by Q antenna port groupsrespectively, any two of the Q antenna port groups cannot be assumed tobe same, and the Q is an integer greater than 1; and the antenna portgroup includes one or more antenna ports.

In one subembodiment, the gNB 410 includes at least one processor and atleast one memory. The at least one memory includes computer programcodes. The at least one memory and the computer program codes areconfigured to be used in collaboration with the at least one processor.The gNB 410 at least transmits the first signaling in the presentdisclosure, and transmits the first radio signal in the presentdisclosure, the first radio signal carrying a first bit block. Herein,the first signaling is a physical layer signaling, the first signalingis used for determining a transmission format corresponding to the firstradio signal, and the first bit block includes a positive integer numberof bits; the transmission format corresponding to the first radio signalis one transmission format in a first format set, and the first formatset includes a first transmission format and a second transmissionformat; a radio signal corresponding to the first transmission formatincludes P radio sub-signal(s), each of the P radio sub-signal(s)carries the first bit block, each of the P radio sub-signal(s) istransmitted by a same antenna port group, and the P is a positiveinteger, a radio signal corresponding to the second transmission formatincludes Q radio sub-signals, each of the Q radio sub-signals carriesthe first bit block, the Q radio sub-signals are transmitted by Qantenna port groups respectively, any two of the Q antenna part groupscannot be assumed to be same, and the Q is an integer greater than 1;and the antenna port group includes one or more antenna ports.

In one subembodiment, the gNB 410 includes a memory that stores acomputer readable instruction program. The computer readable instructionprogram generates an action when executed by at least one processor. Theaction includes: transmitting the first signaling in the presentdisclosure, and transmitting the first radio signal in the presentdisclosure, the first radio signal carrying a first bit block. Herein,the first signaling is a physical layer signaling, the first signalingis used for determining a transmission format corresponding to the firstradio signal, and the first bit block includes a positive integer numberof bits; the transmission format corresponding to the first radio signalis one transmission format in a first format set, and the first formatset includes a first transmission format and a second transmissionformat; a radio signal corresponding to the first transmission formatincludes P radio sub-signal(s), each of the P radio sub-signal(s)carries the first bit block, each of the P radio sub-signal(s) istransmitted by a same antenna port group, and the P is a positiveinteger; a radio signal corresponding to the second transmission formatincludes Q radio sub-signals, each of the Q radio sub-signals carriesthe first bit block, the Q radio sub-signals are transmitted by Qantenna port groups respectively, any two of the Q antenna port groupscannot be assumed to be same, and the Q is an integer greater than 1;and the antenna port group includes one or more antenna ports.

In one embodiment, the gNB 410 corresponds to the base station in thepresent disclosure.

In one embodiment, the UE 450 corresponds to the UE in the presentdisclosure.

In one embodiment, at least one of (the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460, the data source 467) isused for receiving the first signaling in the present disclosure; and atleast one of (the antenna 420, the transmitter 418, the transmittingprocessor 416, the multi-antenna transmitting processor 471, thecontroller/processor 475, the memory 476) is used for transmitting thefirst signaling in the present disclosure.

In one embodiment, at least one of (the antenna 452, the transmitter454, the transmitting processor 468, the multi-antenna transmittingprocessor 457, the controller/processor 459, the memory 460, the datasource 467) is used for receiving the first radio signal in the presentdisclosure; and at least one of (the antenna 420, the receiver 418, thereceiving processor 470, the multi-antenna receiving processor 472, thecontroller/processor 475, the memory 476) is used for transmitting thefirst radio signal in the present disclosure.

In one embodiment, at least one of (the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460, the data source 467) isused for receiving the second signaling in the present disclosure; andat least one of (the antenna 420, the transmitter 418, the transmittingprocessor 416, the multi-antenna transmitting processor 471, thecontroller/processor 475, the memory 476) is used for transmitting thesecond signaling in the present disclosure.

In one embodiment, at least one of (the antenna 420, the receiver 418,the receiving processor 470, the multi-antenna receiving processor 472,the controller/processor 475, the memory 476) is used for receiving thethird signaling in the present disclosure; and at least one of (theantenna 452, the transmitter 454, the transmitting processor 468, themulti-antenna transmitting processor 457, the controller/processor 459,the memory 460, the data source 467) is used for transmitting the thirdsignaling in the present disclosure.

In one embodiment, at least one of (the antenna 452, the transmitter454, the transmitting processor 468, the multi-antenna transmittingprocessor 457, the controller/processor 459, the memory 460, the datasource 467) is used for receiving the second radio signal in the presentdisclosure; and at least one of (the antenna 420, the receiver 418, thereceiving processor 470, the multi-antenna receiving processor 472, thecontroller/processor 475, the memory 476) is used for transmitting thesecond radio signal in the present disclosure.

Embodiment 5

Embodiment 5 illustrates an example of a flowchart of a wirelesstransmission, as shown in FIG. 5. In FIG. 5, a base station N1 is amaintenance base station for a serving cell of a UE U2. In FIG. 5, stepsmarked in box F1 and box F2 are optional respectively.

The N1 transmits a second signaling in S101, transmits a first signalingin S11, transmits a first radio signal in S12, receives a thirdsignaling in S13, and transmits a second radio signal in S102.

The U2 receives a second signaling in S201, receives a first signalingin S21, receives a first radio signal in S22, transmits a thirdsignaling in S23, and receives a second radio signal in S202.

In Embodiment 5, the first signaling is a physical layer signaling, andthe first signaling is used for determining a transmission formatcorresponding to the first radio signal. The first radio signal carriesa first bit block, and the first bit block includes a positive integernumber of bits. The transmission format corresponding to the first radiosignal is one transmission format in a first format set, the secondsignaling is used for determining the first format set, and the firstformat set includes a first transmission format and a secondtransmission format. The second signaling is a high-layer signaling, thefirst format set is one of K candidate format sets, and the K is apositive integer greater than 1. The third signaling is used forindicating whether the first radio signal is correctly received. Thesecond radio signal carries the first bit block, a transmission formatcorresponding to the second radio signal is one transmission format inthe first format set, and the transmission format corresponding to thesecond radio signal is different from the transmission formatcorresponding to the first radio signal. A radio signal corresponding tothe first transmission format includes P radio sub-signal(s), each ofthe P radio sub-signal(s) carries the first bit block, each of the Pradio sub-signal(s) is transmitted by a same antenna part group, and theP is a positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first lit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one or moreantenna ports.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal.

In one embodiment, the P is greater than 1, and time domain resourcesoccupied by any two of the P radio sub-signals are orthogonal.

In one embodiment, the P is equal to 1.

In one embodiment, the first bit block is a TB.

In one embodiment, the first bit block includes two TBs.

In one embodiment, the radio sub-signal includes a reference signal.

In one embodiment, the first signaling indicates from the first formatset the transmission format corresponding to the first radio signal.

In one embodiment, a payload size of the first signaling is differentfor the first transmission format and the second transmission format. Inone subembodiment, the UE determines the transmission formatcorresponding to the first radio signal according to the payload size ofthe first signaling.

In one embodiment, a payload size of the first signaling is same for thefirst transmission format and the second transmission format, and thefirst signaling indicates explicitly the transmission formatcorresponding to the first radio signal. In one subembodiment, aninformation bit in the first signaling indicates if the transmissionformat corresponding to the first radio signal is the first transmissionformat or the second transmission format.

In one embodiment, the first signaling includes scheduling informationof the first radio signal, and the scheduling information includes atleast one of {occupied time-frequency resources, an MCS, an RV, a HARQProcess Number}.

In one embodiment, the first signaling is a DCI.

In one embodiment, the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: small-scale characteristics ofa radio channel over which a signal transmitted by a first antenna portis conveyed cannot be used to deduce small-scale characteristics of aradio channel over which a signal transmitted by a second antenna portis conveyed. The first antenna port and the second antenna port belongto any two different antenna port groups among the Q antenna port groupsrespectively, and the small-scale characteristics include a channelimpulse response.

In one embodiment, the antenna port is formed by superposition ofmultiple antennas through antenna virtualization, and mappingcoefficients from the multiple antennas to the antenna port constitute abeamforming vector. The phrase that any two of the Q antenna port groupscannot be assumed to be same refers that beamforming vectorscorresponding to any two antenna ports in the Q antenna port groupscannot be assumed to be same.

In one subembodiment, the beamforming vector corresponding to theantenna port is formed by a product of an analog beamforming matrix anda digital beamforming vector. In one subembodiment, the Q antenna portgroups correspond to Q analog beamforming matrixes respectively, thebeamforming vector corresponding to the antenna port is formed by aproduct of the analog beamforming matrix and a digital beamformingvector, that is, w_(l,q)=C_(q)b_(l,q), where 1≤q≤

, w_(l,q) represents the beamforming vector corresponding to the lthantenna port in the qth antenna port group, C_(q) represents the analogbeamforming matrix corresponding to the qth antenna port group, andb_(l,q) represents the digital beamforming vector corresponding to thelth antenna port in the qth antenna port group.

In one subembodiment, different antenna port groups correspond todifferent analog beamforming matrixes, that is, if 1≤q1≤

, 1≤q2≤

, q1≠q2, then C_(q1)≠C_(q2).

In one subembodiment, antenna ports in one same antenna port groupcorrespond to different digital beamforming vectors, that is, if l1≠l2,then b_(l1,q)≠b_(l2,q).

In one embodiment, the phrase that any two of the Q antenna port groupscannot be assumed to be same refers that: the UE cannot perform acombined channel estimation using reference signals transmitted by anytwo antenna ports in the Q antenna port groups.

In one embodiment, the first format set further includes at least oneadditional transmission format different from the first transmissionformat and the second transmission format.

In one embodiment, the first transmission format corresponds to one of(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO).

In one embodiment, different antenna ports in one same antenna portgroup transmit the first radio signal through one mode among(single-antenna transmission, transmit diversity, large delay CDD,closed-loop SM, MU-MIMO, TDM, FDM, CDM).

In one embodiment, the second signaling is an RRC signaling.

In one embodiment, the second signaling is UE specific.

In one embodiment, each of the K candidate format sets includes thefirst transmission format. In one subembodiment, the first transmissionformat corresponds to transmit diversity.

In one embodiment, the candidate format set consists of two transmissionformats.

In one embodiment, the candidate format set consists of threetransmission formats.

In one embodiment, at least two of the K candidate format sets includedifferent numbers of transmission formats.

In one embodiment, the third signaling includes an UCI.

In one embodiment, an RV corresponding to the second radio signal isdifferent from an RV corresponding to the first radio signal.

In one embodiment, an NDI corresponding to the second radio signal isdifferent from an NDI corresponding to the first radio signal.

Embodiment 6

Embodiment 6 illustrates an example of a diagram of a resource mappingof a radio signal corresponding to the first transmission format in thepresent disclosure and a resource mapping of a radio signalcorresponding to the second transission format in the presentdisclosure, as shown in FIG. 6.

In Embodiment 6, corresponding to the first transmission format, thefirst radio signal includes 1 radio sub-signal, that is, P=1. The radiosub-signal is transmitted by one antenna port group. Corresponding tothe second transmission format, the first radio signal includes Q radiosub-signals, the Q radio sub-signals are transmitted by Q antenna portgroups respectively, and the Q is an integer greater than 1.

In one embodiment, time domain resources occupied by the first radiosignal are unrelated to the transmission format corresponding to thefirst radio signal. In one subembodiment, no matter in the case of thefirst transmission format or in the case of the second transmissionformat, the time domain resources occupied by the first radio signal areT time unit(s), wherein the T is a positive integer. In onesubembodiment, the time unit is an Orthogonal Frequency DivisionMultiplexing (OFDM) symbol.

In one subembodiment, the T is an integer greater than or equal to Q.Time domain resources occupied by any of the Q radio sub-signals have atime duration of T/Q time unit(s), that is, the T1=T2= . . . =T_(Q)=T/Q,wherein T_(q) is a time duration corresponding to time domain resourcesoccupied by the qth (q=1−Q) radio sub-signal among the Q radiosub-signals.

In one embodiment, time domain resources occupied by any two of the Qradio sub-signals are orthogonal. In one subembodiment, time domainresources occupied by the Q radio sub-signals are consecutive.

In one embodiment, the first bit block corresponds to a first TTI; aphysical layer channel to which a given radio sub-signal is mapped, inthe case of the second transmission format, corresponds to a TTI whichhas a less time duration than the first TTI; and the given radiosub-signal is any of the Q radio sub-signals. In one subembodiment, theQ radio sub-signals include at least two radio sub-signals, and physicallayer channels to which the two radio sub-signals are mapped, in thecase of the second transmission format, correspond to TTIs of differenttime durations.

In one embodiment, in the case of the first transmission format,frequency domain resources occupied by the first radio signal in afrequency domain are W1 bandwidth units; in the case of the secondtransmission format, frequency domain resources occupied by any of the Qradio sub-signals in a frequency domain are W2 bandwidth units; the W2is equal to W1 multiplied by Q, the W1 is a positive integer, and the W2is a positive integer.

In one subembodiment, the bandwidth unit is the bandwidth of asubcarrier spacing.

In one subembodiment, in the case of the first transmission format, thefrequency domain resources occupied by the first radio signal in thefrequency domain are consecutive.

In one subembodiment, in the case of the first transmission format, thefrequency domain resources occupied by the first radio signal in thefrequency domain are inconsecutive.

In one subembodiment, in the case of the second transmission format, thefrequency domain resources occupied by any of the Q radio sub-signals inthe frequency domain are consecutive.

In one subembodimemt, in the case of the second transmission format, thefrequency domain resources occupied by any of the Q radio sub-signals inthe frequency domain are inconsecutive.

In one subembodiment, in the case of the second transmission format,frequency domain resources occupied by any two of the Q radiosub-signals in the frequency domain are the same.

In one subembodiment, in the case of the second transmission format,frequency domain resources occupied by any two of the Q radiosub-signals in the frequency domain are different.

Embodiment 7

Embodiment 7 illustrates an example of a diagram of an antennastructure, as shown in FIG. 7. In FIG. 7, a communication node isequipped with G antenna group(s), and the G antenna groups correspond toG Radio Frequency (RF) Chain(s) respectively. One antenna group includesV antennas. The G is a positive integer, and the V is a positiveinteger. For 1≤g≤G, antennas in an antenna group #g include {Ant g_1,Ant g_2, . . . , Ant g_V} shown in FIG. 7, the antennas in the antennagroup #g perform analog beamforming through an analog beamforming vectorc_(g), wherein c_(g) is a V×1-dimensional vector. x₁, . . . , x_(Q) inFIG. 7 are desired signals to be transmitted, and the desired signalsare transmitted after experiencing digital beamforming and analogbeamforming. The baseband processor is used for performing digitalbeamforming for the x₁ . . . x_(Q), and the analog beamforming vector isused for performing analog beamforming for the output of the basebandprocessor. B is used to express a digital beamforming matrix, wherein Bis a G×L-dimensional matrix. The lth (1≤l≤L) beamforming vectorcorresponding to the antenna group #g is a product of the gth element inthe lth column (b_(l)) of the digital beamforming matrix B and an analogbeamforming vector c_(g) corresponding to the antenna group #g, that is,b_(l,g)c_(g), wherein b_(l,g) is the gth element in the lth column ofthe digital beamforming matrix B.

In one embodiment, the G antenna groups are mapped to

antenna port groups. A number of antenna groups contained in the qthantenna port group is expressed by G_(q). (An) index(es) of the antennagroup(s) contained in the qth antenna port group is(are) identified by{j_(q,1), . . . , j_(q,G) _(q) }. A digital beamforming vectorcorresponding to the lth (1≤l≤L) antenna port in the qth (1≤q≤

) antenna port group consists of elements

{b_(l, j_(q, 1)), …  , b_(l, j_(q, G_(q)))}of the b_(l), and is expressed as

b_(l, q) = [b_(l, j_(q, 1)), …  , b_(l, j_(q, G_(q)))]^(T),wherein b_(l,q) is the digital beamforming vector corresponding to thelth antenna port in the qth antenna port group, and the sign “T” meanstranspose.

In one subembodiment, different antenna groups contained in one sameantenna port group use the same analog beamforming vector, that is,c_(j) _(q) _(,1)=c_(j) _(q) _(,2)= . . . =c_(j) _(q) _(G) _(q) =c_(q).Antenna groups contained in different antenna port groups use differentanalog beamforming vectors, that is, if 1≤q1≤

, 1≤q_(2S)≤

, q1≠q2, then, c_(q1)≠c_(q2). The complete beamforming vector w_(l,q) ofthe lth antenna port in the qth antenna port group is formed by aproduct of a analog beamforming matrix C_(q) corresponding to the qthantenna port group and the digital beamforming vector b_(l,q)corresponding to the lth antenna port in the qth antenna port group,that is, w_(l,q)=C_(q)b_(l,q), wherein the analog beamforming matrixC_(q) is a G_(q)V×G_(q)-dimensional matrix, the C_(q) is formed by G_(q)numbered c_(q)s that are in diagonal arrangement, that is

$C_{q} = {\begin{bmatrix}c_{q} & \ldots & 0 \\\vdots & \ddots & \vdots \\0 & \ldots & c_{q}\end{bmatrix}.}$

In one subembodiment, antenna groups in different antenna port groupsuse mutually orthogonal analog beamforming vectors.

In one subembodiment, different antenna ports in one antenna port groupcorrespond to different digital beamforming vectors.

In one subembodiment, different antenna ports in one antenna port groupcorrespond to mutually orthogonal digital beamforming vectors.

In one subembodiment, all antenna port groups include a same number ofantenna groups.

In one subembodiment, at least two of the antenna port groups includedifferent numbers of antenna groups.

Embodiment 8

Embodiment 8 is a structure block diagram of a processing device in aUE, as shown in FIG. 8. In FIG. 8, the processing device 800 in the UEis mainly composed of a first receiver 801, a second receiver 802 and afirst transmitter 803.

The first receiver 801 receives a first signaling; the second receiver802 receives a first radio signal, wherein the first radio signalcarries a first bit block; and the first transmitter 803 transmits athird signaling, wherein the third signaling is used for indicatingwhether the first radio signal is correctly received.

In Embodiment 8, the first signaling is a physical layer signaling, thefirst signaling is used for determining a transmission formatcorresponding to the first radio signal, and the first bit blockincludes a positive integer number of bits. The transmission formatcorresponding to the first radio signal is one transmission format in afirst format set, and the first format set includes a first transmissionformat and a second transmission format. A radio signal corresponding tothe first transmission format includes P radio sub-signal(s), each ofthe P radio sub-signal(s) carries the first bit block, each of the Pradio sub-signal(s) is transmitted by a same antenna port group, and theP is a positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one or moreantenna ports.

In one embodiment, a time duration of time domain resources occupied bythe first radio signal is unrelated to the transmission formatcorresponding to the first radio signal.

In one embodiment, the second receiver 802 further receives a secondsignaling; wherein the second signaling is a high-layer signaling, thesecond signaling is used for determining the first format set, the firstformat set is one of K candidate format sets, and the K is a positiveinteger greater than 1.

In one embodiment, the second receiver 802 further receives a secondradio signal, the second radio signal carrying the first bit block;wherein a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different from thetransmission format corresponding to the first radio signal.

In one embodiment, the first receiver 801 includes at least one of {theantenna 452, the receiver 454, the receiving processor 456, themulti-antenna receiving processor 458, the controller/processor 459, thememory 460, the data source 467} mentioned in Embodiment 4.

In one embodiment, the second receiver 802 includes at least one of {theantenna 452, the receiver 454, the receiving processor 456, themulti-antenna receiving processor 458, the controller/processor 459, thememory 460, the data source 467} mentioned in Embodiment 4.

In one embodiment, the first transmitter 803 includes at least one of{the antenna 452, the transmitter 454, the transmitting processor 468,the multi-antenna transmitting processor 457, the controller/processor459, the memory 460, the data source 467} mentioned in Embodiment 4.

Embodiment 9

Embodiment 9 is a structure block diagram of a processing device in abase station, as shown in FIG. 9. In FIG. 9, the processing device 900is mainly composed of a second transmitter 901, a third transmitter 902and a third receiver 903.

The second transmitter 901 transmits a first signaling; the thirdtransmitter 902 transmits a first radio signal, wherein the first radiosignal carries a first bit block; and the third receiver 903 receives athird signaling, wherein the third signaling is used for indicatingwhether the first radio signal is correctly received.

In Embodiment 9, the first signaling is a physical layer signaling, thefirst signaling is used for determining a transmission formatcorresponding to the first radio signal, and the first bit blockincludes a positive integer number of bits. The transmission formatcorresponding to the first radio signal is one transmission format in afirst format set, and the first format set includes a first transmissionformat and a second transmission format. A radio signal corresponding tothe first transmission format includes P radio sub-signal(s), each ofthe P radio sub-signal(s) carries the first bit block, each of the Pradio sub-signal(s) is transmitted by a same antenna port group, and theP is a positive integer. A radio signal corresponding to the secondtransmission format includes Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, and the Q is aninteger greater than 1. The antenna port group includes one or moreantenna ports.

In one embodiment, a time duration of time domain resources occupied bythe first radio signal is unrelated to the transmission formatcorresponding to the first radio signal.

In one embodiment, the third transmitter 902 further transmits a secondsignaling, wherein the second signaling is a high-layer signaling, thesecond signaling is used for determining the first format set, the firstformat set is one of K candidate format sets, and the K is a positiveinteger greater than 1.

In one embodiment, the third transmitter 902 further transmits a secondradio signal, the second radio signal carrying the first bit block;wherein a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different from thetransmission format corresponding to the first radio signal.

In one embodiment, the second transmitter 901 includes at least one of{the antenna 420, the transmitter 418, the transmitting processor 416,the multi-antenna transmitting processor 471, the controller/processor475, the memory 476} mentioned in Embodiment 4.

In one embodiment, the third transmitter 902 includes at least one of{the antenna 420, the transmitter 418, the transmitting processor 416,the multi-antenna transmitting processor 471, the controller/processor475, the memory 476} mentioned in Embodiment 4.

In one embodiment, the third receiver 903 includes at least one of {theantenna 420, the receiver 418, the receiving processor 470, themulti-antenna receiving processor 472, the controller/processor 475, thememory 476} mentioned in Embodiment 4.

The ordinary skill in the art may understand that all or part steps inthe above method may be implemented by instructing related hardwarethrough a program. The program may be stored in a computer readablestorage medium, for example Read-Only Memory (ROM), hard disk or compactdisc, etc. Optionally, all or part steps in the above embodiments alsomay be implemented by one or more integrated circuits. Correspondingly,each module unit in the above embodiment may be realized in the form ofhardware, or in the form of software function modules. The presentdisclosure is not limited to any combination of hardware and software inspecific forms. The UE or terminal in the present disclosure includesbut not limited to mobile phones, tablet computers, notebooks, networkcards, NB-lIoT terminals, eMTC terminals, and other wirelesscommunication equipment. The base station or system in the presentdisclosure includes but not limited to macro-cellular base stations,micro-cellular base stations, home base stations, relay base station,and other wireless communication equipment.

The above are merely the preferred embodiments of the present disclosureand are not intended to limit the scope of protection of the presentdisclosure. Any modification, equivalent substitute and improvement madewithin the spirit and principle of the present disclosure are intendedto be included within the scope of protection of the present disclosure.

What is claimed is:
 1. A method in a User Equipment (UE) in wirelesstransmission, comprising: receiving a first signaling; and receiving afirst radio signal, the first radio signal carrying a first bit block;wherein the first signaling is a physical layer signaling, the firstsignaling is used for determining a transmission format corresponding tothe first radio signal, the first bit block is a Transport Block (TB),and the first bit block comprises a positive integer number of bits; thetransmission format corresponding to the first radio signal is onetransmission format in a first format set, and the first format setcomprises a first transmission format and a second transmission format;a radio signal corresponding to the first transmission format comprisesP radio sub-signal(s), each of the P radio sub-signal(s) carries thefirst bit block, each of the P radio sub-signal(s) is transmitted by asame antenna port group, and the P is a positive integer; a radio signalcorresponding to the second transmission format comprises Q radiosub-signals, each of the Q radio sub-signals carries the first bitblock, the Q radio sub-signals are transmitted by Q antenna port groupsrespectively, any two of the Q antenna port groups cannot be assumed tobe same, time domain resources occupied by any two of the Q radiosub-signals are orthogonal, and the Q is an integer greater than 1; andthe antenna port group comprises one or more antenna ports.
 2. Themethod according to claim 1, comprising: receiving a second signaling;wherein the second signaling is a high-layer signaling, the secondsignaling is used for determining the first format set, the first formatset is one of K candidate format sets, and the K is a positive integergreater than
 1. 3. The method according to claim 1, wherein a timeduration of time domain resources occupied by the first radio signal isunrelated to the transmission format corresponding to the first radiosignal; and the P is greater than 1, and time domain resources occupiedby any two of the P radio sub-signals are orthogonal.
 4. The methodaccording to claim 1, comprising: transmitting a third signaling;wherein the third signaling is used for indicating whether the firstradio signal is correctly received; a payload size of the firstsignaling is different for the first transmission format and the secondtransmission format.
 5. The method according to claim 1, comprising:receiving a second radio signal, the second radio signal carrying thefirst bit block; wherein a transmission format corresponding to thesecond radio signal is one transmission format in the first format set,and the transmission format corresponding to the second radio signal isdifferent from the transmission format corresponding to the first radiosignal.
 6. A method in a base station in wireless transmission,comprising: transmitting a first signaling; and transmitting a firstradio signal, the first radio signal carrying a first bit block; whereinthe first signaling is a physical layer signaling, the first signalingis used for determining a transmission format corresponding to the firstradio signal, the first bit block is a Transport Block (TB), and thefirst bit block comprises a positive integer number of bits; thetransmission format corresponding to the first radio signal is onetransmission format in a first format set, and the first format setcomprises a first transmission format and a second transmission format;a radio signal corresponding to the first transmission format comprisesP radio sub-signal(s), each of the P radio sub-signal(s) carries thefirst bit block, each of the P radio sub-signal(s) is transmitted by asame antenna port group, and the P is a positive integer; a radio signalcorresponding to the second transmission format comprises Q radiosub-signals, each of the Q radio sub-signals carries the first bitblock, the Q radio sub-signals are transmitted by Q antenna port groupsrespectively, any two of the Q antenna port groups cannot be assumed tobe same, time domain resources occupied by any two of the Q radiosub-signals are orthogonal, and the Q is an integer greater than 1; andthe antenna port group comprises one or more antenna ports.
 7. Themethod according to claim 6, comprising: transmitting a secondsignaling; wherein the second signaling is a high-layer signaling, thesecond signaling is used for determining the first format set, the firstformat set is one of K candidate format sets, and the K is a positiveinteger greater than
 1. 8. The method according to claim 6, wherein atime duration of time domain resources occupied by the first radiosignal is unrelated to the transmission format corresponding to thefirst radio signal; and the P is greater than 1, and time domainresources occupied by any two of the P radio sub-signals are orthogonal.9. The method according to claim 6, comprising: receiving a thirdsignaling; wherein the third signaling is used for indicating whetherthe first radio signal is correctly received; and a payload size of thefirst signaling is different for the first transmission format and thesecond transmission format.
 10. The method according to claim 6,comprising: transmitting a second radio signal, the second radio signalcarrying the first bit block; wherein a transmission formatcorresponding to the second radio signal is one transmission format inthe first format set, and the transmission format corresponding to thesecond radio signal is different from the transmission formatcorresponding to the first radio signal.
 11. A UE in wirelesstransmission, comprising: a first receiver, to receive a firstsignaling; and a second receiver, to receive a first radio signal, thefirst radio signal carrying a first bit block; wherein the firstsignaling is a physical layer signaling, the first signaling is used fordetermining a transmission format corresponding to the first radiosignal, the first bit block is a Transport Block (TB), and the first bitblock comprises a positive integer number of bits; the transmissionformat corresponding to the first radio signal is one transmissionformat in a first format set, and the first format set comprises a firsttransmission format and a second transmission format; a radio signalcorresponding to the first transmission format comprises P radiosub-signal(s), each of the P radio sub-signal(s) carries the first bitblock, each of the P radio sub-signal(s) is transmitted by a sameantenna port group, and the P is a positive integer; a radio signalcorresponding to the second transmission format comprises Q radiosub-signals, each of the Q radio sub-signals carries the first bitblock, the Q radio sub-signals are transmitted by Q antenna port groupsrespectively, any two of the Q antenna port groups cannot be assumed tobe same, time domain resources occupied by any two of the Q radiosub-signals are orthogonal, and the Q is an integer greater than 1; andthe antenna port group comprises one or more antenna ports.
 12. The UEaccording to claim 11, further comprising: a first transmitter, totransmit a third signaling; wherein the third signaling is used forindicating whether the first radio signal is correctly received; and apayload size of the first signaling is different for the firsttransmission format and the second transmission format.
 13. The UEaccording to claim 11, wherein the second receiver further receives asecond signaling; wherein the second signaling is a high-layersignaling, the second signaling is used for determining the first formatset, the first format set is one of K candidate format sets, and the Kis a positive integer greater than
 1. 14. The UE according to claim 11,wherein a time duration of time domain resources occupied by the firstradio signal is unrelated to the transmission format corresponding tothe first radio signal; and the P is greater than 1, and time domainresources occupied by any two of the P radio sub-signals are orthogonal.15. The UE according to claim 11, wherein the second receiver furtherreceives a second radio signal, the second radio signal carrying thefirst bit block; wherein a transmission format corresponding to thesecond radio signal is one transmission format in the first format set,and the transmission format corresponding to the second radio signal isdifferent from the transmission format corresponding to the first radiosignal.
 16. A base station in wireless transmission, comprising: asecond transmitter, to transmit a first signaling; and a thirdtransmitter, to transmit a first radio signal, the first radio signalcarrying a first bit block; wherein the first signaling is a physicallayer signaling, the first signaling is used for determining atransmission format corresponding to the first radio signal, the firstbit block is a Transport Block (TB), and the first bit block comprises apositive integer number of bits; the transmission format correspondingto the first radio signal is one transmission format in a first formatset, and the first format set comprises a first transmission format anda second transmission format; a radio signal corresponding to the firsttransmission format comprises P radio sub-signal(s), each of the P radiosub-signal(s) carries the first bit block, each of the P radiosub-signal(s) is transmitted by a same antenna port group, and the P isa positive integer; a radio signal corresponding to the secondtransmission format comprises Q radio sub-signals, each of the Q radiosub-signals carries the first bit block, the Q radio sub-signals aretransmitted by Q antenna port groups respectively, any two of the Qantenna port groups cannot be assumed to be same, time domain resourcesoccupied by any two of the Q radio sub-signals are orthogonal, and the Qis an integer greater than 1; and the antenna port group comprises oneor more antenna ports.
 17. The base station according to claim 16,comprising: a third receiver, to receive a third signaling; wherein thethird signaling is used for indicating whether the first radio signal iscorrectly received; and a payload size of the first signaling isdifferent for the first transmission format and the second transmissionformat.
 18. The base station according to claim 16, wherein the thirdtransmitter further transmits a second signaling; wherein the secondsignaling is a high-layer signaling, the second signaling is used fordetermining the first format set, the first format set is one of Kcandidate format sets, and the K is a positive integer greater than 1.19. The base station according to claim 16, wherein a time duration oftime domain resources occupied by the first radio signal is unrelated tothe transmission format corresponding to the first radio signal; and theP is greater than 1, and time domain resources occupied by any two ofthe P radio sub-signals are orthogonal.
 20. The base station accordingto claim 16, wherein the third transmitter further transmits a secondradio signal, the second radio signal carrying the first bit block;wherein a transmission format corresponding to the second radio signalis one transmission format in the first format set, and the transmissionformat corresponding to the second radio signal is different from thetransmission format corresponding to the first radio signal.